Re: [PATCH] mac80211: fix possible deadlock in TX path

[Erik Stromdahl]

On 4/30/19 9:49 AM, Toke HÃiland-JÃrgensen wrote:
> Erik Stromdahl <erik.stromdahl@xxxxxxxxx> writes:
>
> > This patch fixes a possible deadlock when updating the TX statistics
> > (when calling into ieee80211_tx_stats()) from ieee80211_tx_dequeue().
>
> So is this the fix for the issue with TX scheduling you reported
> earlier? :)

Actually not. I thought so initially, but then, after a few more test runs,
I was able to run into the issue again.

But it does seem to fix the other issue with the RCU stall since I haven't
seen it with this patch applied (could be just a coincidence though).

--
Erik